Reinforced expanded metal.



J. KAHN & T. H. KANE. REINFORCED EXPANDED METAL.

APPLICATION FILED JULY 19, 191 1.

1, 1 1 1 ,838, Patented Sept. 29, 1914.

2 SHEETS-8HEET 1.

. T l WITNESSES: IN YEN TORS J. KAHN & T. H1KANE.

REINFORCED EXPANDEDv METAL.

APPLIOATION FILED JULY 19, 1911.

1 1 1 1,838. Patented Sept. 29, 1914.

2 SHEETS-SHEET 2.

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WITNESSES:

TTORNEY till.

UNITED STATES PATENT OFFICE. p

JULIUS KAHN, OF DETROIT, MICHIGAN, 1ND THOMAS HENRY KANE, OF YOUNGSTOWN,

OHIO, ASSIGNORS TO TRUSSED CONCRETE STEEL COMPANY, OF DETROIT, MICHI- GAN, A. CORPORATION OF MICHIGAN.

REINFORCED nxrnnnnn METAL.

Patented Sept. 29, 1914.

Serial No. 639,272.

To all whom it may concern Be it known that we, JULIUs KAHN, a citizen of the United States, residing at Detroit, in the county of Wayne and State of Michigan, and THOMAS H. KANE, a citizen of the United States, residing at Youngstown, in the county of Mahomng and State of Ohio, have invented a new and useful Reinforced Expanded Metal, of which the fol lowing is a specification.

This invention relates to means for stiffening and otherwise strengthening ribbed expanded sheet metal, and the objects of this invention are, to provide means for preventing further expansion of ribbed metal on lines at an angle to the ribs, and to so combine a series of parallel rods with ribbed expanded metal as to better adapithe new structure to resist the various stresses set up by loads in composite slabs wherein this new structure is employed as a reinforcement.

la the accompanying drawings, Figure 1 is an edge view of a sheet of ribbed expanded metal with reinforcing rods secured to the ribs. Fig. 2 is a lan of the same. Fig. 3 is an edge View of a similar sheet of metal with reinforceing rods extending through the sides of the ribs. Fig. 4 is a plan of the same. Fig. 5 is an edge view of a similar sheet of metal with the reinforcing. rods se cured to the bases of the ribs. Fig. 6 is a plan of the same. Fi 7 is an end view of a roll of the material s own in Fig. 5.

Similar reference characters refer'to like parts throughout the several views.

The expanded metal shown in the drawings is that of the Kahn Patent No. 987 ,374, dated March 21, 1911, hut the present system of reinforcement may be employed in connectiorf with any other type of ribbed expanded metal. I

The sheets of expanded metal shown are formed of a series of longitudinal ribs or heams 1, generally U shaped in cross section, and longitudinally extending narrow strands 2. These strands and ribs connect to the ties 3., which in turn, are joined midway between the strands by the small V shaped saddlest. All the arts are integral with each other. The ri s 1. are preferably so formed that the outer rih otone sheet will fit into the outer rih of thenext sheet, so that continuity of structure is attained.

As all the ribs 1 and strands 2 are parallel Y to each other, this material is admirably adapted to resist tension stresses parallel to these ribs. But stresses at right angles to these ribs and strands are liable to open up the ribs and crack the plastic material in which the expanded metal is incased.

The drawings show reinforcing rods 6, 7

and 8, extending substantially at right angles to the ribs 1, and secured thereto at the tops. intermediate the to s and bases, and at the bases, respectively, (epending upon the choice of the engineer or designer. The rods 6 may be secured to the tops of the ribs of any ribbed metal in any desired manner, preferably by the well known process of spot-welding, or by soldering. Where the rods 7 are passed through holes punched in the sides of the ribs, the rods may be se-,

will resist the cross stresses, :1 union between them and the ribs is not absolutely necessary.

The rods 8 are secured to the lateral flanges at the bases of the ribs, a structure which may be preferable to the others under certain conditions, as when face down in the bottom of a reinforced slab. The spacing of these rods 6, 7 and 8, and their sizes will depend upon the stresses which occur in the slabs in'which the metal is embedded. These sheets, which may be constructed the full size of a partition or roof panel at the factory, may be rolled up for shipment as indicated in Fi 7. When the edges of a sheet of this rein orced expanded metal are secured in position, plaster may be applied to bothsides and the partition or the roof slab will be finished. The dimensions of the spans will determine the sizes and numbers of the ribs 1 and the thickness of the sheet metal. 7

Having now explained our improvements, what we claim as our invention and desire to secure by Letters Patent is 1. A reinforced expanded metal comprising parallel ribs and strands of entire metal and open-work metal between them, and metal rods rigidly attached at intervals to said ribs and extending at substantially right angles to the same to prevent further expansion of the open-work metal.

2. A new article of manufacture, consisting. of a sheet of reinforced expanded metal, comprising parallel ribs and open-work metal between the ribs, and metal rods rigidly attached at intervals to the walls of said ribs and extending at substantially right angles to the ribs to prevent extension of the sheet at right an les to said ribs.

3. A new artic e of manufacture consisting of reinforced expanded metal comprising alternate bands of expanded metal and parallel ribs, U-shaped in cross-section, and rods extending at substantially right angles to the ribs and attached to both walls thereof to prevent the ribs from spreading.

4. An expanded metal structure including reticulated web portions and ribs integr'al with said portions and alternating therewith, said ribs being U-shaped in cross section and closed at one side only and the opposite walls of each rib having a rigid 20 uniting connection at intervals.

In testimony whereof we have each signed this specification in the presence of two sub- 

